package cn.tedu._04weibo.base.filters;

import cn.tedu._04weibo.pojo.vo.UserVO;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;

@WebFilter(filterName = "loginCheckFilter", urlPatterns = {"/v1/weibo/insert","/v1/comment/insert"})
public class LoginCheckFilter implements Filter {
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {
        Filter.super.init(filterConfig);
    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        HttpServletRequest request = (HttpServletRequest) servletRequest;
        HttpServletResponse response = (HttpServletResponse) servletResponse;

        HttpSession session = request.getSession();
        UserVO userVO = (UserVO) session.getAttribute("user");

        if (userVO != null){
            //放行
            filterChain.doFilter(request, response);
        }else {
            response.sendRedirect("/login.html");
        }
    }

    @Override
    public void destroy() {
        Filter.super.destroy();
    }
}
